UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 1037

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

21.6 Securing Oscillation Stabilization Time
oscillation stabilization time is the reset value of the OSTS register, 2
is released by RESET pin input.
the other half is the stabilization time of the PLL. Set an oscillation stabilization time double that of the oscillation
stabilization time of the oscillator used when the STOP mode is released. In addition, when releasing the mode by
RESET pin input, be sure to secure the oscillation stabilization time by outputting the RESET signal at low level for the
time longer than the oscillation stabilization time of the used resonator minus the fixed oscillation stabilization time.
time of the watchdog timer.
Oscillated waveform
STOP mode status
When the STOP mode is released, the oscillation stabilization time set by the OSTS register elapses. The
However, the actual oscillation stabilization time is half this value (after reset: 2
The timer for counting the oscillation stabilization time secures oscillation stabilization time equal to the overflow
The operation performed when the STOP mode is released by an interrupt request signal is shown below.
Caution For details of the OSTS register, see 5.3 (5) Oscillation stabilization time select register
Interrupt request
(OSTS).
f
CLK
Figure 21-2. Oscillation Stabilization Time
CHAPTER 21 STANDBY FUNCTION
Clock generator
User’s Manual U18279EJ3V0UD
stops
Oscillation stabilization
14
time count
/f
X
(2.048 ms at f
13
/f
X
(1.024 ms at f
X
= 8 MHz), if the STOP mode
X
= 8 MHz), and
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